find7: LVM partitioning support (phase 1)

This just adds the LVM prebuilt to recovery and normal ramdisks,
reconfiguration of storage is a separate patch

Change-Id: I45cd5a8a32dd376ab2e94f4270a196d2ee7a21f0

Conflicts:
	device.mk
root: Add busybox to ramdisk

Change-Id: I09a289081d0f2c025ac53e292a3e1dd283f0d3cf
LVM: Initial storage & init changes